World Records - Tennis - Pledge Sports
Roger Federer: The Longest World No. 1 | ATP Tour | Tennis
Who has 'served' longest as ATP world number 1? | Deccan Herald
World Records - Tennis - Pledge Sports
Novak Djokovic Breaks Roger Federers World Record For Most Weeks at No.1 in ATP Rankings | Tennis News | India.com sports news
ATP Tour records: Most titles in tennis career (men's) | SportzPoint
Novak Djokovic eclipses Federer's all-time ATP record for most weeks at No 1 - Tennis Majors
ATP Tour records: Most titles in tennis career (men's) | SportzPoint
Tennis news: Novak Djokovic breaks Federer's record for most weeks as ATP No. 1
Novak Djokovic: The Most Weeks N.1 on ATP Tour Ranking | Tennis | Eurosport - YouTube
ATP Finals: Novak Djokovic will be aiming to equal Roger Federer's record of six season-ending titles | Tennis News | Sky Sports
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Best tennis players in the world: From Roger Federer to Serena Williams
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2017 ATP World Tour - Wikipedia
List of ATP number 1 ranked singles tennis players - Wikipedia
Novak Djokovic Eclipses Roger Federer's ATP Record For Most Weeks As Number One
FedEx Performance Zone: Best Career Grand Slam Records | ATP Tour | Tennis
STAT PACK: The amazing numbers behind latest Djokovic ATP record - TennisBuzz - Breaking tennis news, live scores and features
ATP Tour records: Most titles in tennis career (men's) | SportzPoint
Tennis: Federer advances to record-extending 15th ATP Finals semi - The Mainichi
World Records - Tennis - Pledge Sports
ATP Tour Masters 1000 - Wikipedia
